Engineered for heavy-duty construction and mining excavation operations, this oil pump delivers consistent lubrication support for excavator power systems, reducing wear of internal moving components during prolonged high-load operation. Manufactured to standardized specifications, it features high-strength cast iron construction with excellent heat resistance, maintaining stable performance under operating temperatures ranging from -30°C to 120°C. Precision-machined internal components ensure accurate flow output, maintaining flow integrity of lubrication circuits to minimize abnormal friction loss. The pre-installed sealing components provide reliable physical interception of external debris, avoiding contamination of lubricating oil during operation. Each unit undergoes pressure and flow testing before leaving the factory to match the installation dimensions of corresponding engine models, eliminating complex modification requirements during replacement and shortening equipment maintenance downtime.